[pianotech] Miking center pins and broach set

[reggaepass at aol.com]

Hi Julia,

A caliper is one of the tools that I seem to use nearly every day.? Yes, we measure all of our center pins (that is, a few samples from each new pack).? It is advantageous if you find yourself with something between the whole number sizes (in thousandths of an inch).? This means that you may be able to find a pin that will be tight in the birdseye that will require a little less reaming of the bushings, which is faster for you and better for the the part being re-centered.

Cheers,

Alan Eder



From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of KeyKat88 at aol.com
Sent: Monday, February 16, 2009 11:55 PM
To: pianotech at ptg.org
Subject: [pianotech] Miking center pins and broach set


?


Greetings,



?



???????? Does anyone else out there mike their center pins? I had?an instructor at?UWO who always miked his. He said that he found that?pins can vary in size. 



??? ?I miked my broaches too and?gaging by?the way my broaches feel sliding?through the mike jaws (with a very slight resistence, the Schaff #21 pins mike at .0525!? Are broaches .0005" larger than center pins? Sure seems that way.



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Thanks in advance,



Julia Gottshall



Reading, PA




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